JP3007794B2 - Oil separation device for engine driven air conditioning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil separating apparatus for use in an engine-driven air-conditioning system in which a heat pump is driven by the power of an engine such as a gas engine.

[0002]

2. Description of the Related Art In an engine-driven air conditioner, an outdoor unit is constructed by unitizing a heat exchange device such as a compressor body and a condenser, a gas engine for driving the compressor body, an engine attachment device, and the like. Conventionally, drain collected by an exhaust heat exchanger of an engine or the like has been discharged as sewage outside the machine as it is.

[0003]

However, the drain from the engine contains some oil, which may contaminate the sewage equipment, and it is desired to recover the oil from the drain. I have. The present invention has been made in view of such circumstances, and an object of the present invention is to provide an oil separation device that can efficiently separate and recover oil in a drain with a compact configuration.

[0004]

Means for Solving the Problems The oil separation device of the present invention for achieving the above object has the following configuration. That is, the oil separation device in the engine driven air conditioner according to the present invention includes a specific gravity difference separation chamber for introducing drain from the engine and an adsorption separation chamber, and the bottom of the specific gravity difference separation chamber and the upper part of the adsorption separation chamber are drained. It communicates through an overflow flow passage that allows only water to flow, and connects the upper space of the specific gravity difference separation chamber and the adsorption separation chamber with a pipe line, equip the oil separation material with an oil adsorbent, and A discharge port is provided.

[0005]

According to the above construction, the drain discharged from the engine first flows into the specific gravity separation chamber and stays there.
When the amount of drain accumulated in the specific gravity difference separation chamber exceeds a set value, it flows into the adsorption separation chamber via the overflow channel. At this time, in the specific gravity difference separation chamber, most of the oil component is separated on the liquid surface due to the specific gravity difference. It will be stored. The drain flowing into the adsorption separation chamber still contains a small amount of oil, but this oil is adsorbed on the oil adsorption sheet, and only drain water from which oil has been removed is discharged from the drain outlet. In addition, an oil mist exists in the upper space of the specific gravity difference separation chamber, but this also flows into the adsorption separation chamber via a pipe and is adsorbed by the oil adsorption sheet. In addition, when the specific gravity difference separation chamber is configured to have a double-chamber structure in which the specific gravity difference is sequentially communicated via the overflow channel, the separation efficiency due to the specific gravity difference is further increased, and the oil contained in the drain flowing into the adsorption separation chamber is further reduced. Become. The oil separated and stored in the specific gravity separation chamber is collected and discharged by periodic inspection and the like, and the oil absorption sheet is also replaced as appropriate.

[0006]

According to the present invention, since the oil content of the drain is effectively separated and stored by utilizing the difference in specific gravity, the amount of adsorbed oil on the adsorption sheet is extremely small, and the inspection cycle can be lengthened. The handleability was excellent. If a means using only an adsorbent, such as a filter or an adsorbent sheet, is used to separate and collect the oil content of the drain, it is expected that the adsorbent will need to be replaced in a short period of time, which makes management cumbersome. In addition, in order to eliminate long-term equipment replacement, a large-capacity adsorbent is required, and there is a problem that the entire apparatus becomes large. Therefore, the interior of the outdoor unit can be easily provided.

[0007]

1 shows an outline of an engine-driven air conditioner, 1 is an outdoor unit, 2 is an indoor unit, and the outdoor unit 1 has a heat exchanger 4 such as a compressor body 3 and a condenser in a heat pump. , A gas engine 5 for driving the compressor body, a radiator 6 for cooling the engine, an oil separation device 7 according to the present invention, and the like.

FIG. 2 shows the oil separating device 7.
The oil separating device 7 has, for example, a width of 250 mm and a depth of 200 mm.
It is formed in a box shape having a height of about 170 mm and a height of about 170 mm, and comprises a resin case body 8 opened upward and a cover 9 detachably connected thereto.

The interior of the case body 8 is divided into a first specific gravity difference separation chamber 12, a second specific gravity difference separation chamber 13, and an adsorption separation chamber 14 by partition walls 10 and 11 erected from the bottom. The bottom of the first specific gravity difference separation chamber 12 and the second specific gravity difference separation chamber 13 are communicated with each other through an overflow flow path 16 formed by the upper partition plate 15, and are connected to the bottom of the second specific gravity difference separation chamber 13. The adsorption separation chamber 14 communicates with an overflow channel 18 formed by an upper partition plate 17.

A cover 9 which covers the case body 8 is provided with a drain inlet 19 through which drain from the engine flows into the first specific gravity difference separation chamber 12, and an upper portion of the first specific gravity difference separation chamber 12. A pipe 20 that connects the space s to the adsorption separation chamber 14 is connected. Also, the adsorption separation chamber 14
Is equipped with an oil adsorbing sheet 21 as an example of an adsorbent, and a drain outlet 22 is formed.

The oil separation device 7 of the present invention is configured as described above. Drain from the engine 5 flows from the drain inlet 19 into the first specific gravity separation chamber 12 and stays there.
When the drain is accumulated in the first specific gravity difference separation chamber 12 by a predetermined amount or more, it flows into the second specific gravity difference separation chamber 13 through the overflow channel 16. At this time, in the first specific gravity difference separation chamber 12, most of the oil component is separated on the liquid surface due to the specific gravity difference, so that the separated oil component does not reach the bottom inlet of the overflow passage 16, and this oil component is also The outflow is prevented by the partition plate 15, and is stored in the first specific gravity difference separation chamber 12.

When the amount of drain accumulated in the second specific gravity difference separation chamber 13 exceeds a set value, the drainage flows into the adsorption separation chamber 14 via the overflow channel 18. Also at this time, in the second specific gravity difference separation chamber 13, the oil still contained in the drain is separated on the liquid surface due to the specific gravity difference and stored in the specific gravity difference separation chamber 13. The drain flowing into the adsorption / separation chamber 14 still contains a small amount of oil, but this is adsorbed by the oil adsorption sheet 21 and only the drain from which the oil has been removed is discharged from the drain outlet 22. .

In the upper space s of the first specific gravity difference separation chamber, an oil mist contained in air or gas when the drain flows is floating, which is also adsorbed and separated through the pipe 20. It flows into the chamber 14 and is adsorbed by the oil adsorption sheet 21. The first and second specific gravity difference chambers 12, 1
The oil separated and stored in step 3 is collected and discharged through periodic inspections and the like, and the oil absorption sheet 21 is also replaced as appropriate.

In the embodiment, the drain is separated into two layers and then flows into the adsorption / separation chamber 14 after being subjected to the specific gravity difference separation. However, in a simplified manner, the embodiment is provided with only one specific gravity difference separation chamber 12. Conversely, conversely, the drain may be allowed to flow into the adsorption separation chamber 14 after repeating the specific gravity difference separation in three or more stages, and the amount of drain and the amount of oil contained in the drain, The capacity in the specific gravity difference separation chamber may be selected depending on the use conditions such as the above. The adsorbent provided in the adsorption / separation chamber 14 is not limited to an oil adsorbing sheet, but may be a material that adsorbs oil by passing through a filter.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the accompanying drawings.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an engine driven air conditioning system.

FIG. 2 is a longitudinal sectional front view of an oil separation device.

FIG. 3 is an exploded perspective view of the oil separation device.

[Explanation of symbols]

 5 Engine 12, 13 Specific gravity difference separation chamber 14 Adsorption separation chamber 18 Overflow channel 21 Adsorbent (adsorption sheet) 22 Drain discharge port s Upper space

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-254213 (JP, A) JP-A-3-60791 (JP, A) JP-A-6-31110 (JP, A) JP-A-58-58 34182 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F01D 25/32 F24F 5/00 B01D 17/00 B01D 17/02 B01D 25/00

Claims (1)

(57) [Claims] 1. A specific gravity difference separation chamber (12, 13) for introducing drain from an engine (5) and an adsorption separation chamber (14), and a bottom portion of the specific gravity difference separation chamber (13) and an adsorption separation chamber (14).
And an upper space of the specific gravity difference separation chamber (12) and the adsorption separation chamber (14) through a conduit (20). An oil separation device for an engine-driven air conditioner, comprising an oil adsorbent (21) in a separation chamber and a drain outlet (22).